My daughter, Maria and I went outside my house last night at 8:23 PM and noticed a bright white fast-moving object came into view at about 45 degrees up from the horizon and moved swiftly across the sky from West to NNE. It was the brightness of Sirius or maybe brighter, and the size of half of an eraser head at arm's length - close to the size of Venus. I could not tell what the distance from earth was, but it was high up at the altitude I would expect to see a satellite at. The object changed trajectory at 80 degrees to a more NE direction. It was at that point that I said maybe it was not a satellite - it then faded slowly and moved UP and it was gone at about 110 degrees or so. The entire sighting lasted maybe 20 seconds. We both came away with the idea that it did not look like a satellite or a plane, and by going up and away, this would indicate something else.